Revert "MT#4141 Speed up 'build' runs by loading YAML files only once"

This reverts commit 335d53c95ce5ef2e0ece3321e79a1f69a3321394.
MT#5027 Speed up 'build' runs by using Perl daemon
MT#5027 Add netcat to Depends
MT#5027 Sort debian/ngcp-ngcpcfg.install file
MT#5027 Use three-argument form of `open' function
MT#5027 Bind dd2-daemon to localhost only
MT#5027 Drop white-space before trailing ":"
MT#5027 Remove unused variable
Release new version 0.19.0